甲状腺未分化癌的CT特点  

CT features of anaplastic thyroid carcinoma

作　　者：李琳[1] 王勇[1] 林蒙[1] 赵燕风[1] 杨亮[1] 郭炜[1] 周纯武[1] 罗德红[1] 

机构地区：[1]中国医学科学院北京协和医学院肿瘤医院影像诊断科,北京100021

出　　处：《实用放射学杂志》2016年第4期518-521,共4页Journal of Practical Radiology

摘　　要：目的 总结甲状腺未分化癌的CT特点。方法 回顾性分析12例经手术或活检病理证实的甲状腺未分化癌的CT表现。结果 单发病灶11例（91.7%），表现为低密度肿物伴条带状、絮状或斑片状高密度区。11例（91.7%）为轻-中度强化。8例（66.7%）可见粗大钙化灶，其中4例为不完整环状或蛋壳状钙化。11例（91.7%）侵犯周围结构：气管6例（50%）, 食管4例（33.3%）,带状肌7例 （58.3%）, 喉2例（16.7%）, 血管6例（50%）。5例（41.7%） 出现颈内静脉瘤栓。10 例（83.3%）病理证实淋巴结转移，强化形式为3种类型：较均匀轻度强化4例（40%）、轻度强化伴内部小片状低密度区7例（70%）、轻度环形强化伴内部无强化低密度区7例（70%）。结论 甲状腺未分化癌的CT特点包括低密度肿物，内部或边缘絮状或斑片状高密度区，粗大钙化灶，轻度强化。常见侵犯周围结构及淋巴结坏死。Objective To summarize the CT features of anaplastic thyroid carcinoma （ATC）. Methods CT manifestations of 12 patients with ATC confirmed by surgery or biopsy were analyzed retrospectively. Results 11 （91. 7%） patients had single lesion. The lesions appeared as low attenuation mass with cord-like, flocculent or patchy high attenuation areas. The lesions had mild to moderate enhancement in 11 cases （91.7 % ）. Coarse calcifications were detected in 8 cases （66.7 % ）, 4 of them were incomplete rim or eggshell. 11 cases （ 91.7 % ） showed invasion into adjacent structures, including trachea （ 6 cases, 50 % ）, esophagus （ 4 cases, 33.3 % ）, strap muscles （7 cases, 58.3%）, larynx （2 cases, 16.7%）, blood vessels （6 cases, 50%）. 5 cases （41.7%） had tumor thrombus in the internal jugular vein. 10 cases （83.3%） had lymph nodes metastasis. The enhancements of lymph nodes were divided into 3 types： mild homogeneous enhancement （4 cases, 40 % ）, mild enhancement with internal low-attenuation areas （ 7 cases, 70 % ） and ring-like enhancement without internal enhancement （7 cases, 70%）. Conclusion CT features of ATC include low-density mass with cords, flocculent and patchy high-density areas, coarse calcification and mild to moderate enhancement,invasion to adjacent structure and lymph node metastasis with necrosis are common.

关 键 词：甲状腺未分化癌 计算机体层成像 

分 类 号：R736.1[医药卫生—肿瘤] R814.42[医药卫生—临床医学]